Mitsubishi Electric CITY MULTI PCFY-P15NGMU-E Technical & Service Manual

TECHNICAL & SERVICE MANUAL

CONTENTS

1. FEATURES ··········································2

2. PART NAMES AND FUNCTIONS·······4

3. SPECIFICATIONS ·······························6

4. OUTLINES AND DIMENSIONS···········9

5. WIRING DIAGRAM····························13

6.

REFRIGERANT SYSTEM DIAGRAM

··14

7. MICROPROCESSOR CONTROL······15

8. TROUBLE SHOOTING······················22

9. DISASSEMBLY PROCEDURE··········29

10. PARTS LIST······································33

11. RoHS PARTS LIST ··························40

12. OPTIONAL PARTS ··························47

PCFY-P15NGMU-E

PCFY-P24NGMU-E

PCFY-P30NGMU-E

PCFY-P36NGMU-E

INDOOR UNIT

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

August 2006

R410A R22

No. OC343

REVISED EDITION-A

NOTE:

• This manual describes only

service data of the indoor

units.

• RoHS compliant products

have <G> mark on the spec

name plate.

• For servicing of RoHS

compliant products, refer to

the RoHS PARTS LIST.

Revision:

• RoHS PARTS LIST is added.

• Some descriptions have been

modified.

• Please void OC343.

[Models]

OC343A-1.qxp 06.8.2 11:31 AM Page 1

2

1FEATURES

Models Cooling capacity / Heating capacity

PCFY-P15NGMU-E 15,000 / 17,000 Btu/h

PCFY-P24NGMU-E 24,000 / 27,000 Btu/h

PCFY-P30NGMU-E 30,000 / 34,000 Btu/h

PCFY-P36NGMU-E 36,000 / 40,000 Btu/h

Indoor unit

1. EASY TO CLEAN ; FLOCKLESS VANE

With our original air current control mechanism, a flockless vane is

newly adapted.

The flockless vane prevents the condensation on the vane.

By changing the vane to the flockless type, the unit can be cleaned

much easier with mild household detergent.

2. NEW MATERIALS FOR BETTER OIL RESISTANCE

We have changed the materials of grill, filer, fan and fan casing from ABS to P.P. (polypropylene) for better oil

resistance. As a result, oil crazing is cut in half.

3. SIMPLIFIED INSTALLATION WORK (DIRECT SUSPENDING METHOD)

Simplified the installation work by changing the suspending method to the direct suspending method (suspending

the unit directly from the suspension fixture).

In this way, the unit can be attached to the suspension fixture without removing the installation parts off (Only the

side cover is removed). This method is much simpler than the “One-time installation method”.

Unifies the air speed

with the vane

Sending the air to the upper

area of the vane

Prevents the air comes from

cntering from outside the unit

Protruding portion B

Protruding portion A

Flockless vane

Air outlet

B

A

OC343A-1.qxp 06.8.2 11:31 AM Page 2

3

4. IMPROVING EFFICIENCY OF PIPING WORK

11Removed the knockout work by separating the piping

space from the air outlet for efficiency of the piping work.

wKnockout work is needed for the top part. When option-

al drain-up machine is installed, the refrigerant pipe

exits out from the top.

wPlease move the rubber plug for the unit to the right joint

when drainage pipe exits from the left side.

22Improved the flexibility by making it possible for

drainage pipe to exit not only from the right side

back but also from the left side back.

Back panel

U-cut

Side panel

L : Liquid pipe

G : Gas pipe

D : Drain pipe

LL

G

D

G

open open

Drain pan Rubber plug

Insulation cover

(attached)

Drain pipe

(purchased locally)

Band

(attached)

Insulation

cover

Joint coupler

(attached)

5. EASY MAINTENANCE FILTER ; NO MAINTENANCE NECESSARY FOR 2500 HOURS

The new long-life air filter can be used continuously 2500 hours without maintenance (at general office use).

OC343A-1.qxp 06.8.2 11:31 AM Page 3

4

2PART NAMES AND FUNCTIONS

Air outlet

Intake grille Air intake

Left/right guide vanes

Change the direction of airflow

from the horizontal blower.

Long-life filter

Removes dust and foreigh matter from air coming in

through the grille (Recommended cleaning interval :

Approx, every 2,500 operating hours)

Up/down guide vanes

Change the direction of airflow from the

vartical blower.

● Remote controller

● Operation buttons

●Indoor Unit

[PAR-21MAA]

● Once the controls are set, the same operation mode can be repeated

by simply pressing the ON/OFF button.

PAR-21MAA

ON/OFF

FILTER

CHECK

OPERATION

CLEAR

TEST

TEMP.

MENU

BACK DAY

MONITOR/SET

CLOCK

ON/OFF

Set Temperature buttons

Down

Up

Timer Menu button

(Monitor/Set button)

Mode button (Return button)

Set Time buttons

Back

Ahead

Timer On/Off button

(Set Day button)

Opening the

door

ON/OFF button

Fan Speed button

Filter button

(<Enter> button)

Test Run button

Check button (Clear button)

Airflow Up/Down button

Louver button

( Operation button)

To preceding operation

number

Ventilation button

( Operation button)

To next operation number

OC343A-1.qxp 06.8.2 11:31 AM Page 4

5

●Display

For purposes of this explanation,

all parts of the display are shown

as lit. During actual operation, only

the relevant items will be lit.

˚F˚C

ERROR CODE

AFTER

TIMER

TIME SUN MON TUE WED THU FRI SAT

ON

OFF

Hr

AFTER

FILTER

FUNCTION

ONLY1Hr.

WEEKLY

SIMPLE

AUTO OFF

Identifies the current operation

Shows the operating mode, etc.

* Multilanguage display is sup-

ported.

“Centrally Controlled” indicator

Indicates that operation of the re-

mote controller has been prohib-

ited by a master controller.

“Timer Is Off” indicator

Indicates that the timer is off.

Temperature Setting

Shows the target temperature.

Day-of-Week

Shows the current day of the week.

Time/Timer Display

Shows the current time, unless the simple or Auto Off

timer is set.

If the simple or Auto Off timer is set, shows the time

remaining.

“Sensor” indication

Displayed when the remote controller

sensor is used.

“Locked” indicator

Indicates that remote controller but-

tons have been locked.

“Clean The Filter” indicator

Comes on when it is time to clean the

filter.

Timer indicators

The indicator comes on if the corre-

sponding timer is set.

Up/Down Air Direction indica-

tor

The indicator shows the direc-

tion of the outcoming airflow.

“One Hour Only” indicator

Displayed if the airflow is set to

Low and downward during COOL

or DRY mode. (Operation varies

according to model.)

The indicator goes off after one

hour, at which time the airflow

direction also changes.

Room Temperature display

Shows the room temperature.

Louver display

Indicates the action of the swing

louver. Does not appear if the

louver is stationary.

(Power On indicator)

Indicates that the power is on.

Fan Speed indicator

Shows the selected fan speed.

Ventilation indicator

Appears when the unit is running in

Ventilation mode.

Caution

●Only the Power on indicator lights when the unit is stopped and power supplied to the unit.

●If you press a button for a feature that is not installed at the indoor unit, the remote controller will display the “Not Available”

message.

If you are using the remote controller to operate multiple indoor units, this message will appear only if the feature is not

present at every unit connected.

●When power is turned ON for the first time, it is normal that “PLEASE WAIT” is displayed on the room temperature

indication (For max. 2minutes). Please wait until this “PLEASE WAIT” indication disappear then start the operation.

OC343A-1.qxp 06.8.2 11:31 AM Page 5

6

3SPECIFICATIONS

3-1. SPECIFICATIONS

Note 1. Rating conditions

Cooling : Indoor : D.B. 80

_

F W.B. 67

_

F

outdoor : D.B. 95

_

F W.B. 75

_

F

Heating : Indoor : D.B. 70

_

F

outdoor : D.B. 47

_

F W.B. 43

_

F

W2. Air flow and the noise level are indicated as Low - Medium2 - Medium1 - High.

Item

V·Hz

Btu/h

kW

A

—

in.

—

CFM

Pa

kW

—

in.

dB

lb

Cooling capacity

Power

Heat exchanger

Air filter

Fan ✕ No

Pipe

dimensions

Unit drain pipe size

Noise level W2

Product weight

Exterior

(munsell symbol)

Fan motor

output

External

static pressure

Liquid

side

Gas

side

Heating capacity

F

a

n

Dimensions

Height

Width

Depth

Electric characteristic

Input

Cooling

Heating

Cooling

Heating

Current

PCFY-P15NGMU-E PCFY-P24NGMU-E PCFY-P30NGMU-E PCFY-P36NGMU-E

Single phase 208/230V 60Hz

15,000

17,000

0.08

0.40

24,000

27,000

0.09

0.45

30,000

34,000

0.23

1.12

36,000

40,000

0.27

1.32

420-490-570-640

380-470-530-600

0.07

32-34-37-39

75

Unit : Munsell<0.70Y 8.59/0.97>

51-9/16

26-25/32

Cross fin(Aluminum plate fin and copper tube)

Sirocco fan ✕ 3

0

PP honey comb

5/8"

3/8"

1" I.D. (PVC pipe VP-20 connectable)

5/8" / 3/4"(compatible)

3/8"

8-9/32 10-5/8

640-710-810-880

600-670-770-830

0.09

36-38-41-43

82

63-3/4

Sirocco fan ✕ 4

920-990-1120-1230

870-930-1050-1160

0.15

37-39-42-44

95

39-5/8

Sirocco fan ✕ 2

280-350-390-420

250-310-350-380

0.054

1/2"

1/4"

29-33-36-38

60

DRY

Air flow W2

WET

OC343A-1.qxp 06.8.2 11:31 AM Page 6

7

3-2. ELECTRICAL PARTS SPECIFICATIONS

Parts name

Model Symbol

TH21

TH22

TH23

FUSE

MF

C1

MV

LEV

TB2

TB5

TB15

250V 6A

OFF 266˚F ±41˚F

(L1, L2, GR) 330V 30A

(M1, M2, S) 250V 20A

(1, 2) 250V 10A

3µF ✕ 440V

Inner-thermostat

4µF ✕ 440V 5µF ✕ 440V 7µF ✕ 440VFan motor capacitor

Vane motor

Linear expansion valve

PCFY-P15NGMU-E PCFY-P24NGMU-E PCFY-P30NGMU-E PCFY-P36NGMU-E

Room temperature

thermistor

Liquid pipe temperature

thermistor

Gas pipe temperature

thermistor

Fuse

(Indoor controller board)

Fan motor

(with inner-thermostat)

Power supply

terminal block

Transmission

terminal block

MA remote controller

terminal block

DC12V Stepping motor drive

port [3.2 (0~2000pulse) EDM-40YGME

4-Pole Output 54W

D09B4P54MS

MP35EA

DC12V MP42EA

DC12V

4-Pole Output 70W

D09C4P70MS 4-Pole Output 90W

D10C4P90MS 4-Pole Output 150W

D10D4P150MS

DC12V Stepping motor drive

port [5.2 (0~2000pulse) EDM-80YGME

Resistance 30_F/15.8k", 50_F/9.6k", 70_F/6.0k", 80_F/4.8k", 90_F/3.9k", 100_F/3.2k"

OC343A-1.qxp 06.8.2 11:31 AM Page 7

8

3-3. NOISE CRITERION CURVES

90

80

70

60

50

40

30

20

10 63 125 250 500 1000 2000 4000 8000

APPROXIMATE THRESHOLD OF HEARING

FOR CONTINUOUS NOISE

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar)

BAND CENTER FREQUENCIES, Hz

PCFY-P15NGMU-E High

NOTCH

Medium1

Medium2

Low

38

SPL(dB)

36

33

29

LINE

90

80

70

60

50

40

30

20

10 63 125 250 500 1000 2000 4000 8000

APPROXIMATE

THRESHOLD OF

HEARING FOR

CONTINUOUS

NOISE

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar)

BAND CENTER FREQUENCIES, Hz

PCFY-P24NGMU-E High

NOTCH

Medium1

Medium2

Low

39

SPL(dB)

37

34

32

LINE

90

80

70

60

50

40

30

20

10 63 125 250 500 1000 2000 4000 8000

APPROXIMATE

THRESHOLD OF

HEARING FOR

CONTINUOUS

NOISE

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar)

BAND CENTER FREQUENCIES, Hz

PCFY-P30NGMU-E High

NOTCH

Medium1

Medium2

Low

43

SPL(dB)

41

38

36

LINE

90

80

70

60

50

40

30

20

10 63 125 250 500 1000 2000 4000 8000

APPROXIMATE

THRESHOLD OF

HEARING FOR

CONTINUOUS

NOISE

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar)

BAND CENTER FREQUENCIES, Hz

PCFY-P36NGMU-E High

NOTCH

Medium1

Medium2

Low

44

SPL(dB)

42

39

37

LINE

UNIT

About 1.4m

MICROPHONE

CEILING

1m

OC343A-1.qxp 06.8.2 11:31 AM Page 8

9

OUTLINES AND DIMENSIONS

4

9

2-7/16(62) 1-15/16(49)

1-3/4(45) 11-13/16(300)

7/16(11)

Knock out hole for fresh air intake

9

1-1/4(32)6-11/32(161)

(7~8)

1/4~9/32

1-21/32(42) 7-1/16(179)

3-1/8(79)

1-1/2(38)1-1/2(38)

5-5/32(131)

(175)

1-13/16(46) 6-7/8 1/16(1)

3-11/16(86)

5-7/16(138)

6-3/4(171)

10-3/8(263)

13-7/8(352)20-21/32(525)

36-17/32(928)

2-3/4(70)

9-1/32(229)

(150) 23/32(18)

5-29/32

5-1/2(140) 2-3/4(70)

3-1/8(80)12-5/8(320)

3-7/16(87)

5/8(16)

6-3/16(157)

9-1/2(241)

7-15/16(201)

7-3/16(182)

Less than

26-25/32(680)

9-13/16(230)

39-3/8(1000) 11-13/16(300)

10-5/8(270)

or more

6

Allowing clearances

Less than

1/16(1)

(Gap to ceiling)

19-11/16(500)

or more

Ceiling

Rear wall

10(254)

19-29/32(506) 2-7/32(56)

26-25/32(680)

36-5/32(918)

3-17/32(90)6-3/8(161)

Air intake

liquid 1/4F([6.35)

gas 1/2F([12.7)

(Drainage)

38-11/16(983)

3-25/32(96)

7-3/32(180)

8-9/32(210)

3-3/16(81)

39-5/8(1000)

35-19/32(904)

Air outlet

36-23/32(933) (Suspension bolt pitch)

4

5

81

(FRONT VIEW)

2

Electrical box

3

2

7

Electrical box

When electrical box

is pulled down

Ceiling

Refrigerant-pipe connection(liquid pipe side/flared connection)

Knock out hole for upper pipe arrangement

Knock out hole for left drain pipe arrangement

Knock out hole for wiring arrangement

Drainage pipe connection(1-1/32(26mm)I.D.)

Drainage pipe connection(for the left arrangement)

Knock out hole for left drain-piping arrangement

Refrigerant-pipe connection(gas pipe side/flared connection)

1

2

3

4

5

6

7

8

NOTES.

1.Use M10 or W3/8 screw for anchor bolt.

2.Please be sure when installing the drain-up machine

(option parts),refrigerant pipe will be only

upper drain pipe arrangement.

Unit: in.(mm)

INDOOR UNIT

PCFY-P15NGMU-E

OC343A-1.qxp 06.8.2 11:31 AM Page 9

10

9

11-13/16(300)

3-15/16(100)

2-1/8(54) 2-1/4(57)

7/16(11)

9

Knock out hole for fresh air intake

(6~7)

1/4~9/32

1-21/32(42) 7-1/16(179)

1-1/4(32)6-11/32(161)

20-21/32(525)

1-1/2(38)

3-1/8(79)

10-3/8(263)

6-3/4(171)

5-7/16(138)

3-3/8(86)

6-7/8

(175)

1-13/16(46)

5-5/32(131)

1/16(1)

1-1/2(38)

16-3/8(416)

48-5/8(1235)

2-3/4(70)

23/32(18)

5-1/2(140)

(150)

5-29/32

12-5/8(320) 3-1/8(80)

48-13/16(1240)

50-13/16(1290)

47-13/16(1214)

51-9/16(1310)

7-3/32(180)

8-9/32(210)

2-3/16(81) 3-25/32(96)

26-25/32(680) 2-7/32(56)19-29/32(506)

10(254)

3-17/32(90)6-3/8(161)

48-3/8(1228) 11-13/16(300)51-9/16(1310)10-5/8(270)

or more

26-25/32(680)

Less than

3-7/16(87)

5/8(16)

6-3/16(157)

or more

Ceiling

Rear wall

Allowing clearances

8

5

14

Ceiling

Electrical box (FRONT VIEW)

2

3

When electrical box

is pulled down

6

NOTES.

1.Use M10 or W3/8 screw for anchor bolt.

2.Please be sure when installing the drain-up machine

(option parts),refrigerant pipe will be only

upper drain pipe arrangement.

(Suspension bolt pitch)

Air outlet

Air intake

2

7

9-1/32(229)

2-3/4(70)

Electrical box

gas 5/8F([15.88)

liquid 3/8F([9.52)

(Drainage)

7-3/16(182)

7/15/16(201)

9-1/2(241)

Refrigerant-pipe connection(liquid pipe side/flared connection)

Knock out hole for upper pipe arrangement

Knock out hole for left drain pipe arrangement

Knock out hole for wiring arrangement

1

2

3

4

5

6

7

8

Drainage pipe connection(1-1/32(26mm)I.D.)

Drainage pipe connection(for the left arrangement)

Knock out hole for left drain-piping arrangement

Refrigerant-pipe connection(gas pipe side/flared connection)

9-13/16(250)

19-11/16(500)

(Gap to ceiling)

or more

1/16(1)

Less than

Unit : in.(mm)

PCFY-P24NGMU-E

OC343A-1.qxp 06.8.2 11:31 AM Page 10

11

7/16(11)

9

2-3/16(55)5-7/8(150)

13(330)

7-7/8(200)

9

Knock out hole for fresh air intake

(6~7)

7-2/32(289)1-21/32(42)

Electrical box

(160)

1/4~9/32

3-21/32(93)

6-5/16

1-1/2(38) 1-1/2(38)

5-1/2(140)

(196) 1/16(1)

9-9/32(236)

7-9/16

1-25/32(45)

10-3/8(263)

6-3/4(171)

5-7/16(138)

3-3/8(86)

27-1/16(687)20-21/32(525)

48-5/8(1235)

2-3/4(70)

9-1/32(229)

(56)

10(254)

19-29/32(506) 2-7/32

26-25/32(680)

3-17/32(90)6-3/8(160)

48-3/8(1228)

3-3/16(81) 3-25/32(96)

8-5/32(207)

10-5/8(270)

47-13/16(1214)

51-9/16(1310)

50-13/16(1290)

48-13/16(1240)

23/32(18)5-29/32(150)

2-3/4(70)5-1/2(140)

12-5/8(320) 3-1/8(80)

5/8(16)

3-7/16(87)

8-17/32(217)

7-3/16(182)

7-13/16(198)

9-5/8(245)

Less than

26-25/32(680)

10-5/8(270) (300)

11-13/16

51-9/16(1310)

19-11/16(500)

9-13/16(250)

Drainage pipe connection(1-1/32(26mm)I.D.)

Drainage pipe connection(for the left arrangement)

Knock out hole for left drain-piping arrangement

Refrigerant-pipe connection(gas pipe side/flared connection)

8

7

6

5

4

3

2

1

Refrigerant-pipe connection(liquid pipe side/flared connection)

Knock out hole for upper pipe arrangement

Knock out hole for left drain pipe arrangement

Knock out hole for wiring arrangement

Air intake

Air outlet

2

7

Electrical box

When electrical

box is pulled

down

8

514

2

3

Less than

or more

Ceiling

(FRONT VIEW)

(Suspension bolt pitch)

(Drainage)

gas 5/8F([15.88)

liquid 3/8F([9.52)

(Gap to ceiling)

Allowing clearances

Rear wall

Ceiling

1/16(1)

6

NOTES.

1.Use M10 or W3/8 screw for anchor bolt.

2.Please be sure when installing the drain-up machine

(option parts),refrigerant pipe will be only

upper drain pipe arrangement.

Unit: in.(mm)

PCFY-P30NGMU-E

OC343A-1.qxp 06.8.2 11:31 AM Page 11

12

RG01N982

PCFY-P36NGMU-E

9

7-7/8(200) 13(330)

5-7/8(150) 2-3/16(55)

7/16(11)

When electrical box

is pulled down

9

Knock out hole for fresh air intake

1-21/32(42)

Electrical box

3-21/32(93)6-5/16(160)

1/4~9/32(6~7)

1/16(1)1-25/32(45) 9-9/32(236) 7-9/16(192)

1-1/2(38) 1-1/2(38)

5-1/2(140)

10-3/8(263) 6-3/4(171)

5-7/16(138)

3-3/8(86)

27-1/16(687)

20-21/32(525)

60-13/16(1545)

9-1/32(229)

2-7/32(56)19-29/32(506)

10(254)

26-25/32(680)

3-3/16(81) 3-25/32(96)

8-5/32(207)

10-5/8(270)

60(1524)

63-3/4(1620)

23/32(18)5-29/32(150)

2-3/4(70)5-1/2(140)

12-5/8(320) 3-1/8(80)

3-7/16(87)

5/8(16)

8-17/32(217)

9-5/8(245)

7-13/16(198)

7-3/16(182) liquid 3/8F([9.52)

(Drainage)

gas 5/8F/3/4F(Compatible)

([15.88/[19.05)

Less than

26-25/32(680)

10-5/8(270) 11-13/16(300)63-3/8(1620)

or more

1/16(1)

19-11/16(500)

9-13/16(250)

Refrigerant-pipe connection(liquid pipe side/flared connection)

Knock out hole for upper pipe arrangement

Knock out hole for left drain pipe arrangement

Knock out hole for wiring arrangement

1

2

3

4

5

6

7

8

Drainage pipe connection(1-1/32(26mm)I.D.)

Drainage pipe connection(for the left arrangement)

Knock out hole for left drain-piping arrangement

Refrigerant-pipe connection(gas pipe side/flared connection)

6

4

851

3

2

Electrical box

2

7

Air outlet

Air intake

or more

Less than

Ceiling

(FRONT VIEW)

(Suspension bolt pitch)

Allowing clearances

Rear wall

Ceiling

(Gap to ceiling)

NOTES.

1.Use M10 or W3/8 screw for anchor bolt.

2.Please be sure when installing the drain-up machine

(option parts),refrigerant pipe will be only

upper drain pipe arrangement.

7-1/16(239)

2-3/4(70)

60-7/16(1535)

60-29/32(1547)

6-3/8(161) 3-17/32(90)

Unit : in.(mm)

PCFY-P36NGMU-E

OC343A-1.qxp 06.8.2 11:31 AM Page 12

WIRING DIAGRAM

5

13

PCFY-P15NGMU-E PCFY-P24NGMU-E PCFY-P30NGMU-E PCFY-P36NGMU-E

MF

654321 87654321 4321

654321

21 21 21

SW2

(GRN)

VANE

CN6V

(RED)

ADDRESS

CN81

(RED)

ADDRESS

CN42

FUSE

250V

6A

(GRN)

REMOTE

INDICATION

CN52

(WHT)

CENTRALLY

CONTROL

CN51

(WHT)

REMOTO

SWITCH

CN32

(WHT)

LEV

CN60

See fig:w1

ON

OFF

X1

X4

ZNR

F.C

ON

OFF

SW3 SW4

6

ORN

BLU

WHT

YLW

BRN

RED

654321

12345678910123456 12345

3

2

1

2

1

2

1

2

1

2

3

(YLW)

HEATER

CN24

135

13 13 13

321

MV

654321

MV

654321

MV

TH21 TH22 TH23

21 21

L1

L2

GR

X4 X1

M1

M2

1

2

8

7

6

5

4

3

2

1

4

3

2

1

48

6

5151 13

(WHT)

DRAIN

CN31

AC208-230V

(RED)

CNSK

DC13.1V

(WHT)

CN2S

(WHT)

LIQUID

CN21

(RED)

INTAKE

CN20

(BLK)

GAS

CN29

(GRN)

VAHE

CN6V

(GRN)

VAHE

CN6V

CN2D

(WHT)

CN3A

(BLU)

CN2M

(BLU)

M-NET

LED1

TRANS

BLU

BLK

WHT

ORN

RED

LED2

CNDK

(RED)

CNP

(BLU)

FAN

(WHT) CND

(RED)

BLK

BLU

RED

WHT

C1

I.B

P.B

TB2

PULL BOX

FUSE(15A)

BREAKER

(15A)

TO NEXT INDDOR UNIT

GRN

/

YLW

POWER SUPPLY

~/N 208-230V 60Hz

TB5 S(SHIELD)

TO OUTDOOR UNIT

BC CONTROLLER

REMOTE CONTROLLER

DC24-30V

TO MA-REMOTE

CONTROLLER

DC8.7-13V

TB15

MODEL

PCFY-P30NGMU-E MODEL

PCFY-P36NGMU-E

65

BLU

WHT

YLW

ORN

RED

BRN

BLU

WHT

YLW

ORN

A.B

208V 230V

SW5

SW1

SW12

2ND

DIGIT

3RD

DIGIT

SWA

SWC

3

2

1

0SW11

1ST

DIGIT

0SW14

CONNECTION

NO.

0

(RED)

ADDRESS

CN43

(RED)

ADDRESS

CN82

ON

OFF

12345678910

ORN

BLU

WHT

YLW

BRN

RED

LEV

PCFY-P15NGMU-E

PCFY-P24NGMU-E

PCFY-P30NGMU-E

PCFY-P36NGMU-E

Models SW2<

w

1> SW3

ON

OFF

123456

ON

OFF

12345678910

ON

OFF

12345678910

ON

OFF

123456

ON

OFF

123456

ON

OFF

123456

<w

2

>

Use Copper Supply Wire.

w2

1

2

Symbol

I. B Connector Heater

Remote switch

Centrally control

Remote indication

Drain-up machine

Fan phase control

FUSE (6A/250V)

Switch Capacity code

Mode selection

Model selection

Aux.Relay Drain-up machine

Fan motor

Varistor

INDOOR POWER BOARD

Capacitor (fan motor)

Linear expansion valve

Fan motor (with inner thermo)

Vane motor

Thermistor Room temp, detection

(

32°F/15k", 77°F/5.4k"

)

Pipe temp, detection/Iiguid

(

32°F/15k", 77°F/5.4k"

)

Pipe temp, detection/Gas

(

32°F/15k", 77°F/5.4k"

)

Terminal Power supply

block Transmission

MA-remote controller

Legend

Name Symbol Name

P. B

C1

LEV

MF

MV

TH21

TH22

TH23

TB2

TB5

TB15

Indoor controller board

CN24

CN32

CN51

CN52

CNP

F.C

FUSE

SW2

SW3

SW4

X1

X4

ZNR

Symbol

A. B Switch Mode selection

Voltage selection

Address setting 1st digit

Address setting 2nd digit

Connection No.

Ceiling height Selector

Option Selector

Name

Circuit board Address

SW1

SW5

SW11

SW12

SW14

SWA

SWC

LED on indoor board for service

Meaning

Mark

Main power supply

Power supply for

MA-Remote controller

Main power supply(Indoor unit:208-230V)

power on➝Iamp is Iit

Power supply for MA-Remote controller

on➝Iamp is lit

Function

LED1

LED2

Note

1.At servicing for outdoor unit, always follow the wiring diagram of outdoor unit.

2.In case of using MA-Remote controller, please connect to TB15.

(Remote controller wire is non-polar.)

3.In case of using M-NET, please connect to TB5. (Transmission line is non-polar.)

4.Symbol [S] of TB5 is the shield wire connection.

5.Symbols used in wiring diagram above are, : terminal block, : connector.

6.The setting of the SW2/SW3 dip switches differs in the capacity.

For the detail, refer to the fig:

w

1.

7.Please set the switch SW5 according to the power supply voltage.

Set SW5 to 230V side when the power supply is 230 volts.

When the power supply is 208 volts, set SW5 to 208V side.

OC343A-1.qxp 06.8.2 11:31 AM Page 13

14

6REFRIGERANT SYSTEM DIAGRAM

Strainer (#100mesh)

Strainer (# 50mesh)

Heat exchanger

Room temperature thermistor TH21

Gas pipe temperature

thermistor TH23

Liquid pipe temperature

thermistor TH22

Linear expansion valve

Gas pipe

Liquid pipe

Flare connection

Gas pipe

PCFY-P15NGMU-E

{12.7(1/2”)

PCFYP24/P30NGMU-E

{15.88(5/8”)

PCFY-P36NGMU-E

{15.88(5/8”)/{19.05(3/4”)

(compatible)

Liquid pipe {6.35(1/4”) {9.52(3/8”) {9.52(3/8”)

Model

Item

PCFY-P15NGMU-E

PCFY-P24NGMU-E

PCFY-P30NGMU-E

PCFY-P36NGMU-E

Unit : mm(in.)

OC343A-1.qxp 06.8.2 11:31 AM Page 14

MICROPROCESSOR CONTROL7

15

1Press POWER ON/OFF button.

2Press the operation MODE button to display COOL.

3Press the TEMP. button to set the desired temperature.

NOTE: The set temperature changes 2°F when the or button is

pressed one time Cooling 67 to 87°F.

PAR-21MAA

ON/OFF

FILTER

CHECK

OPERATION

CLEAR

TEST

TEMP.

MENU

BACK DAY

MONITOR/SET

CLOCK

ON/OFF

˚F˚C

ERROR CODE

AFTER

TIMER

TIME SUN MON TUE WED THU FRI SAT

ON

OFF

Hr

AFTER

FILTER

FUNCTION

ONLY1Hr.

WEEKLY

SIMPLE

AUTO OFF

INDOOR UNIT CONTROL

7-1. COOL OPERATION

Control modes Control details

1-1. Thermoregulating function (Function to prevent restarting for 3 minutes)

• Room temperature ] desired temperature + 2°F

···Thermo ON

• Room temperature [ desired temperature

···Thermo OFF

1-2. Frozen prevention control

Detected condition : When the liquid pipe temp. (TH22) is 32°F or less in 16

minutes from compressor start up, anti-freezing control

starts and the thermo OFF.

Released condition : The timer which prevents reactivating is set for 3 minutes,

and anti- freezing control is cancelled when any one of the

following conditions is satisfied.

1Liquid pipe temp. (TH22) turns to be 50°F or above.

2The condition of the thermo OFF become complete

by thermoregulating, etc.

3The operation modes become mode other than COOL.

4 The operation stops.

By the remote controller setting (switch of 4 speeds)

2. Fan

1. Thermoregulating

function

Remarks

Type Fan speed notch

[Low], [Med2], [Med1], [High]

4 speeds

To be continued to the next page

OC343A-1.qxp 06.8.2 11:31 AM Page 15

16

→

3

2

1

→

Control modes Control details

Drain pump control

•Always drain pump ON during the COOL and DRY mode operation

(Regardless of the thermo ON/ OFF)

•When the operation mode has changed from the COOL or DRY to the others

(including Stop), OFF the control after the drain pump ON for 3 minutes.

Drain sensor function

• Energize drain sensor at a fixed voltage for a fixed duration. After energizing,

compare the drain sensor’s temperature to the one before energizing, and judge

whether the sensor is in the air or in the water.

Basic control system

• While drain pump is turned on, repeat the following control system and judge

whether the sensor is in the air or in the water.

•Drain sensor temperature rise (∆t)

•Temperature of drain sensor before current is applied (T0)

•Temperature of drain sensor after current is applied (T1)

[ ∆t = T1 – T0 ]

(1)Initial setting : Start at COOL mode and horizontal vane position.

(2)Vane position : Horizontal →Downward A →Downward B →Downward C→Swing

(3)Restriction of the downward vane setting

When setting the downward vane A, B or C in [Med1], [Med2] or [Low] of the fan

speed notch, the vane changes to horizontal position after 1 hour.

4. Vane

(up/ down vane change)

3. Drain pump

Remarks

· Drain sensor

Indoor control

p.c. board

CN31

·

"SET FOR 1 HOUR"

appears on the

wired remote

controller.

Timing of

energizing

drain sensor

ON

OFF Stand by for

a minute 30

sec. 30

sec.

Detect the

temperature

before

energizing

(T0) Detect the

temperature

after

energizing

(T1)

Judge whether

the sensor is in

the air or in the

water.

Stand by for

a minute

·······Repeat

From the preceding page

OC343A-1.qxp 06.8.2 11:31 AM Page 16

17

1Press POWER ON/OFF button.

2Press the operation MODE button to display DRY.

3Press the TEMP. button to set the desired temperature.

NOTE: The set temperature changes 2°F when the or button is

pressed one time. Dry 67 to 87°F.

Control modes Control details

1-1. Thermoregulating function (Function to prevent restarting for 3 minutes)

Setting the Dry thermo by the thermoregulating signal and the

room temperature (TH1).

Dry thermo ON Room temperature ] desired temperature + 2°F

Dry thermo OFF Room temperature [ desired temperature

1-2. Frozen prevention control

No control function

Indoor fan speed depends on the compressor conditions.

3. Drain pump

1. Thermoregulating

function

Remarks

Room

temperature 3 min. passed since starting operation

Thermoregulating signal

Room temperature (T1)

Dry thermo

ON

time (min)

Dry thermo

OFF

time (min)

Less than 64°F

Over 64°FON

OFF

T1 ] 83°F

83°F > T1 ] 79°F

79°F > T1 ] 75°F

75°F > T1

Unconditional

93

73

53

33

10

3

Dry thermo OFF

2. Fan

Note: Remote controller setting is not acceptable.

Dry thermo

Fan speed notch

ON

OFF

[Low]

Stop

4. Vane

(up/ down vane change)

Same control as COOL operation

PAR-21MAA

ON/OFF

FILTER

CHECK

OPERATION

CLEAR

TEST

TEMP.

MENU

BACK DAY

MONITOR/SET

CLOCK

ON/OFF

˚F˚C

ERROR CODE

AFTER

TIMER

TIME SUN MON TUE WED THU FRI SAT

ON

OFF

Hr

AFTER

FILTER

FUNCTION

ONLY1Hr.

WEEKLY

SIMPLE

AUTO OFF

7-2. DRY OPERATION

OC343A-1.qxp 06.8.2 11:31 AM Page 17

18

Control modes Control details

Set by remote controller.

2. Drain pump

Remarks

1. Fan Type Fan speed notch

4 speeds [Low], [Med2], [Med1], [High]

3. Vane

(up/ down vane change)

2-1. Drain pump control

The drain pump turns ON for the specified amount of time when any of the following

conditions is satisfied:

1 ON for 3 minutes after the operation mode is switched from COOL or DRY to

another operation mode (FAN).

2 ON for 6 minutes after the drain sensor is determined to be submerged using the

liquid level detection method given below.

3 ON for 6 minutes after indoor piping (liquid piping) temperature – indoor intake

temperature [ -18°F, AND the drain sensor input is at the short or open level.

(If condition 2 or 3 is still being met after the drain pump has been turned ON for 6

minutes, the drain pump is kept ON for a further 6 minutes.)

2-2. Liquid level detection method

The liquid level is detected by determining whether or not the drain sensor is

submerged, based on the temperature rise after self-heating the sensor. This

process is performed if any of the following conditions is satisfied:

1 Drain pump is ON.

2 Indoor piping (liquid piping) temperature – indoor intake temperature [ -18°F

3 Indoor piping (liquid piping) temperature or indoor intake temperature is at the

short or open level temperature.

4 Every hour after the drain pump is switched from ON to OFF.

Same as the control performed during the COOL operation, but with no restriction

on the vane's downward blow setting

PAR-21MAA

ON/OFF

FILTER

CHECK

OPERATION

CLEAR

TEST

TEMP.

MENU

BACK DAY

MONITOR/SET

CLOCK

ON/OFF

˚F˚C

ERROR CODE

AFTER

TIMER

TIME SUN MON TUE WED THU FRI SAT

ON

OFF

Hr

AFTER

FILTER

FUNCTION

ONLY1Hr.

WEEKLY

SIMPLE

AUTO OFF

7-3. FAN OPERATION

1Press POWER ON/OFF button.

2Press the operation MODE button to display FAN.

OC343A-1.qxp 06.8.2 11:31 AM Page 18

19

1Press POWER ON/OFF button.

2Press the operation MODE button to display HEAT.

3Press the TEMP. button to set the desired temperature.

NOTE: The set temperature changes 2°F when the or button is

pressed one time. Heating 63 to 83°F.

[DEFROST]

The [DEFROST] symbol is only displayed during the defrost operation.

[STANDBY]

The [STANDBY] symbol is only displayed from the time the heating operation

starts unit the heated air begins to blow.

Control modes Control details

1-1. Thermoregulating function (Function to prevent restarting for

3 minutes)

•

Room temperature [ desired temperature -2°F ···Thermo ON

•

Room temperature ] desired temperature ···Thermo OFF

1.

Thermoregulating

function

Remarks

Controlled by the remote controller (4-speed)

Priority is given to below-mentioned controlled mode

2-1. Hot adjuster mode

2-2. Preheating exclusion mode

2-3. Thermo OFF mode (When the compressor off by the

thermoregulating)

2-4. Cool air prevention mode (Defrosting mode)

2-5. Capacity increasing mode

2-1. Hot adjuster mode

The fan controller becomes the hot adjuster mode for the

following conditions.

1 When starting the HEAT operation

2

When the thermoregulating function changes from OFF to ON.

3 When releasing the HEAT defrosting operation

2. Fan

A: HOT adjuster mode start

B: 5 min after the condition A or the indoor

liquid pipe temperature turned 95°F or more

C: 2 min after the condition A

(Terminating the hot adjuster mode)

ACB

[Extra Low]

[Low]

Set fan speed by the remote controller

Hot adjuster mode ✻1

2-2. Preheating exclusion mode

When the condition changes, the auxiliary heater ON to OFF

(thermoregulating or operation stop, etc), the indoor fan

operates in [Low] mode for 1 minute.

· This control is same for the model

without auxiliary heater.

✻1 "STAND BY" will be displayed

during the hot adjuster mode.

To be continued to the next page.

PAR-21MAA

ON/OFF

FILTER

CHECK

OPERATION

CLEAR

TEST

TEMP.

MENU

BACK DAY

MONITOR/SET

CLOCK

ON/OFF

˚F˚C

ERROR CODE

AFTER

TIMER

TIME SUN MON TUE WED THU FRI SAT

ON

OFF

Hr

AFTER

FILTER

FUNCTION

ONLY1Hr.

WEEKLY

SIMPLE

AUTO OFF

7-4. HEAT OPERATION

OC343A-1.qxp 06.8.2 11:31 AM Page 19

20

→

Control modes Control details

2. Fan

Remarks

2-3. Thermo OFF mode

When the thermoregulating function changes to OFF, the

indoor fan operates in [Extra low].

2-4. Heat defrosting mode

The indoor fan stops.

No drain pump operation

However, when the control changes from COOL or DRY

operation, the drain pump operates for 3 minutes.

(1) Initial setting : OFF → HEAT···[last setting]

When changing the mode from exception of HEAT

to HEAT operation. ···[Downward C]

(2) Vane position :

Horizontal →Downward A →Downward B →Downward C→Swing

(3) Restriction of vane position

The vane is horizontally fixed for the following modes.

(The control by the remote controller is temporally invalidated

and it is controlled by the unit.)

•Thermo OFF

•Hot adjuster [Extra low] mode

•Heat defrost mode

3. Drain pump

4. Vane control

(Up/ down vane

change)

From the preceding page

OC343A-1.qxp 06.8.2 11:31 AM Page 20

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